Regenerative- coke-ovek



A ROBERTS. v REGENERATIVE COKE OVEN. I [APPLICATION FILED JAN. 3 191.6 RENEWED Nov. 8, 191s.- '1 ,31 3,207 Patented. Aug. 121,. 1919.

4 SHEETS-SHEFFI- A. ROBERTS.

REGENEHATIV COKE OVEN, APPLICATION FlLED JAN. a. 1916. RENEWED, NOV. 8. 191a.

,31.3,207, Patented Aug. 12, 1919,

4 SHEETSSHEET 2.

' A. ROBERTS.

REGENERATIVECOKE OVEN.

APPLICATION FILIED JAN. 3. I916- RENE'WED NOV. 8, I918.

1 3 1 3,207 Patented Aug. 12, 1919.

4 SHEETS-S HEET 3.

A. ROBERTS.

REGENERATIVE COKE OVEN. APPLICATION FILED mus, 19m. RENEWED NOV. 8. 1918.

- .",313207; Pa tehtedAug. 12,1919.

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ARTHUR ROBERTS. GI EVANSTGN, ELLINUIS.

REGENERATIVE COKE-OVEN.

Specification of Letters Patent.

Application filed January 3, 1916, Serial No. 69,997. Renewed November 8, 1918. Serial No. 261,739.

To all whom it may concern Be it known that I, AnTHUR'HonEnTs, a citizen of the United States, residing at Evanston. county of Cook, and State of Illinois, have invented certain new and useful Improvements in Regenerative Coke- Ovens, of which the following is a specification. v

The present invention has referenceto certain improvements in regenerative coke ovens; that is. coke ovens which are so constructed that the incoming air may be preheated by regeneration. The invention re" lates generally to a construction of this class. in which there are provided regenerators for each group of burners, so that the several groups of burners are made inde pendent oi each other to the extent that the preheating of the air for each group of burners independent of the preheating of the air for the other burners. There have been devised in the past oven constructions in which this result has been secured, bi1t, as far as I am aware, all of said constructions have been open to the objection that theregenerators have been located close to or even between and in contact with the oveirlieating walls. This has made it necessary to separate the carhonizing chambers an additional distance fronreach other sullicient to accommodate the regenerators. thus greatly lengthening the overall dimensions of the bench of ovens, which. except for this reason. might be considerably shortened. Furthermore, when the ree'cnerators are placed between the car bonizin'g chambers. said chambers are necessarily subjected to periodical fluctuations of temperature. according to the heating and cooling of the regenerators. This results in an uneven operation of the ovens, so that it is difiicult, it not impossible, to secure a perfectly uniform carbonizing e'ltect. and in addition to the foregoing objection, the oven walls are subjected to violent and severe stresses due to expansion and contraction. These stresses rapidly open up seams in the oven walls, so that leakage from the car bonizing chambers ensues, with a resulting loss of gas and by-products.

One of the objects of the present invention is to so arrange the several regenerator structures that they may be set at some other point than between the car bonizing chambers, thus making it possible to secure the desired regeneration Without in any. manner lengthening the bench of ovens. it the sametime it is desired to so locate the re-- generators that they may occupy a space which is ordinarily wasted, thus economizmg in space and cost of construction,

Another feature of the invention has ref erence to the placing of the regenerators at such locations with respect to the heating walls that short and direct gas passages may be secured between the burners and regener: ators. Not only will this result in the pro-- duction of a more compact structure,-butalso it will reduce the loss of heat and variation of temperature between the regenerators and the burners.

Another object of the invention is to so arrange the structure that whenever desired. any set of regenerators may be isolated from the ren'iaining regenerators, thus permitting them to be removed or replaced or cleaned with a minimum of interruption to the service of the bench as an entirety.

Other ob'ec-ts and uses of the invention will appear from a. detailed description of the same which consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings: Y

Figure l-shows a longitudinal section through a heating wall with its burners, and through the corresponding rege'nerators, being taken on line l 1 of Fig. 3, looking in the direction of the arrows; Fig. 2 shows a longitudinal section through the central portion of the carbonin ingchamber. being taken on line 2 of Fig. 3. looking in the direction of the arrows;

Fig. 3 shows a cross section through three heating walls and carbonizing chambers of abench. and through the corresponding regenerators. being taken on the. line 3-3 of Fig. 1. looking in the dinection of the arrows, but on an enlarged scale:

Fig. at shows a fragmentary horizontal section corresponding to Fig; 3. but on a considerably enlarged scale. being taken on the line st of Fig. 1, looking in the direction of the arrow;

Fig. shows a fragmentary horizontal section through one of the passages and two of the burners. being taken on the line of Fig. 1, looking in the direction of the arrows, but on an enlarged scale;

Fig. 6 shows diagrammatically a plan view of the foundation fines for the ivaste Patented Aug. 12, rate.

Cit

gases, aportion of the fines being broken away so as to shorten up the figure;

Fig. 7 shows a detail plan view of one of the blocks used in the construction of the heating wall illustrated in the several figures;

Fig. 8 shows a detail side view co re; spending toFig. 7;

Fig. 9 shows a detail plan view of one of the keystone blocks; and

Fig. 1O shows a side view corresponding to Fig. 9.

In the several-figures I have shown a. coke oven construction embodying the general type of heating wall disclosed in my Letters Patent of the United States. No. 1,132,685, issued to me'March 23, 1915. In

that type of construction, the heating wall 1s built up from blocks having certain of their side and horizontal faces recessed, so that, whenthe several blocks are set together, they provide a mesh of tortuous or zigzag passages through which the hot gases travel toward the point of exit. More particularly, in this case I have shown a type b of burner and heating wall construction disclosed in a co-pending application for Letters Patent of the United States, for improvements in burners, executed by' me of even date herewith filed January 3 1916, as Serial No. 69,999. I- have shown this type of heating wall and burner construction in the present case largely as-a matter of convenience, inasmuch as it will be understood-that the. features'of the present in'" vention have reference particularly to the arrangement of the regenerators.

in the particular construction illustrated, the burners ll-supply the heating gases to the tortuous passages of the heatingwall 12. Each heating wall is provided with a row ov burners, and there may be as many heatizcg walls as desired in the bench. The air for each group of burners is supplied to Sit.

7 group by means of a horizontal pasfrom which the air passes down around each burner to be mixed'with the gas supplied through the central portion of the burner tube at the lower end thereof.

Referring particularly to Fig. 3, it will be seen that I have illustrated only a single heating wall 12 between each pair of carbonizing chambers 14 and 15. This, however, is done largely as 'a matter of con venience inasmuch as each carboniz'ing chamber might be provided with two heating walls if desired, in which case there would be located two heating walls between each pair of carbonizing chambers. It will be understood that as far as the features of the present invention are concerned, the use of one or more heating walls between each pair of carbonizing ch'ambers'is a matter of convenience. f

Extending upward in each well are up wall is a horizontal channel 18 within which the spent gases from the entire heating wall are collected At whatever spacings may be desired, there are provided the regenerator structures 19, 20 21, and 22. These regenerator structures are located in pairs. the regenerators of each pair standing in horizontal alinement and being separated by the horizontal partition 23. At their back ends, the regenerators 19 21114120 are connected by a vertical passage 21, and similarly the back ends of the regenerators 21 and are connected by a vertical passage In the particular arrangement illustrated,'there is a complete set of regenerators 19, 20. 21. and 22 corresponding to each heating wall. but, if desired. one complete set of said regenerators might supply or operate for two or more heating walls, this being largely a matter of convenience in construction. As shown in Fig. 3, the several sets of regenerators are separated by the-partitions 26. which partitions are located immediately beneath the soles of the ovens. so that the loads of carbonizing material are directly carried by said partitions. This insures a direct transmission -of the load to the foundation without having to pass said lo'ad through trusses or arches.

Extending lengthwise beneath the sides of the bench are the tunnels 27 and 28. At one end these tunnels are connected by a cross connection 29 which leads to the stack or exhaust fans by a connection 30. The

or passages 35 and 36, respectively, while adjacent to thefront ends of the regenerators 19 and 21 are the vertical chambers or passages 37 and 38 respectively. The upper ends of the passages 37 and 38 communicate with the end portions of the channel 18 and with the lower portions of the up-t-akes l6 and 17 by means of the openings 39 and 40.

Above the openings 39 -and 40 are the slidable dampers 41 and42. whichmay be moved into the twoextreme positions illustrated at the ends of Fig. 1. At one side of said figure the damper 41 is shown as being moved fully in,.whereas the damper 4:2 is shown as being drawn fully out. In the positions mentioned, the damper f1]; isolates the opening 39 from the channel 18, but connects said I opening to the lower end :of the tip-take 16 whereas in the position of the damper 4L2 said'damper isolates the opening 40 from the lower end of the up-take 17-, and connects the openin 4:0 to the channel 1-8.

The vertical assages or chambers 33'and 36 communicate" respectively with the tun-' nels 27 and 28, but whenever-it is desired tocut out any particular oven or set of regenferators, this may be done by closing the dampers- 13 and 474:. v

The operation-of the structure will no/W be readily understood. Assuming that the dampersll and 42 stand in the positions illustrated in Fig. 1, the damper 31 should be closed, the damper 32 opened, aii supplied to the connection 33, and the connection 31'closed.- Under these circumstances,

a the fresh air will be delivered from the coniiection into the tunnel 27, and thence it will pass up by way of the regenerators '20 and 19, whereit.w1ll be heated, said regenerators having been previously heated by spent gases. From the regenerator 19, the

hot air will pass'up by way of the opening 39 through the'iip-take 16 and into the honzontal connection 13. From the horizontal fan as desired. the positions of the dampers 11 and 12 will connection, hot air will be supplied to the -various burners, uniting with the gas, and

be reversed, the positions of the dampers 31 and 32 will be reversed, the air connection 33 will be closed, and airwill be supplied into the connection 34.

It will be seen from an examination of Fig.1 in particular, that each of the regenei-ators 19, 20, 21 and 22is composed of a series of separated stacks or piles of checker- .work which standindependentlyof each other within the several chambers. use otthis arrangement, the longitudinal expansions and contractions will be taken care of in the several piles, and on account of the relatively small size of each of these piles, the amount of expansion and contraction to be tlius controlled will be comparatively small, 1 or even negligible. It will be seen also from .an examination of this construction that it is possible to secure the desired regenerator capacity beneath each heating wallby'malP ing the regenerator'of the desired height.

.wIt will frequently happen that the vertical distance or height available for the accommodation of-the necessary regenerator capacity in a width substantially'equ'al to that of theheating Wall is more than sufficient,

By the 4 in-which case the full regenerator capacity can be secured even where there is'but a single heating wall between each pair of carbonizing chambers, and without the nescessity of increasing the length of the bench.

lVliile I have herein shown and described onlya single construction or embodiment of my invention, still it will be understood that many changes of form and arrangement may be made without departing from its spirit.

I claim: j 1. In a bench of coke ovens having heating walls, the combination with each heating wall of a pair-of regenerators beneath said heating wall, a plurality of burners in the upper. portion of each heating wall. an air-passage in each heating wall connecting with the burners thereof, a riser connecting with each end of each of said air passages, it spent gas channel beneath each heating wall, a connection from the upper portion of each regenerator to the lower portion of the adjacent riser and to the adjacent end oftlie spent gas channel. a valve for each of said connectionsto isolate the connection either from the riser or from the spentgas channel, a tunnel beneath each side of the bench of ovens, a connection between the lower end of each'regenerator and the adjacent tunnel, means for controlling the delivery of spentgas from each tunnel, and

means'for controlling the delivery of all into each tunnel.

2. The combination with a bench of coke ovens, each oven having a heating wall, of a pluralitv of burners iii the upper portion of each heating wall, a common air connec- -tion for feeding all of said burners, a riser connected to each end of said air connection, a spent gas channel beneath each heating walL'a regenerator beneath each end of each heating wall, a connection from the upper portion of each regenerator tothe adjacent end of the spent gas channel and to the ad- 'acent riser a valve for isolatin said 'con- 'nection either from the riser or from the spent gas channel, a tunnel beneath each side' of the bench of ovens, connections be tweeneacli tunnel and lower port ons of the adjacent regeiierators. means for controlling the deliery of'speiit gas from each of said tunnels, and means for controlling the delivery of air into each of said tunnels.

- 3. In abench of coke ovens, the combinationwitli a plurality of heating walls of burners in the upper portion of each heating wall. a common connect on fordelivering air to all of the burners of each heating wall, a riser communicating with each end of each' of said connections. a spent gas channel beneath each heating wall. a pair of 'regencifitors beneath each heating wall. a

connection from the upper portion of each regenerator to the adjacent end of the spent gas channel and to the adjacent riser, a valve for isolating each of said connections either fro pflthe spent gas channel or from the riser, a tun'm l T'mneath each side of the bench of ovens, and a connection between the lower portion of each regenerator and the adjacent tunnel.

-l. In a bench of coke ovens, the combination with a plurality of heating walls of burners in each of said walls, a common connection fondelivering air to the burners of each wall. a spent gas channel for receiving spent gas from each wall, a pair of regenerators" beneath each wall, a connection from generators beneath each heating wall. each regenerator being of a widthless than the distance between the center lines of two adjacent heating walls, a connection from the upper portion of each regcnerator to the ad acent endof the corresponding spent gas channel and the air connection, means for isolating each of said connections either from the air connection or from the spent gas channel, a tunnel beneath each side of the bench of ovens. and a connection between each tunn'e'l and the lower pon'tions of the adjacent regsnerators.

6. In a bench of coke ens, the co nbination with a plurality of heating wz 11's of burners in each of said heating walls. a spent gas channel for receiving spent gas from each of said heating walls a pair of regenerators in the lower portion of the bench of ovens corresponding to eachiheating wall, each pair of regenerators having a dimension in the direction of thelength of the bench less than the distance between the center lines of djacent heating walls, connections from the upper portion ofeac 1v regenerator to the corresponding spent gas-, channel and to the corresponding burners means for isolating each of said connections either from the spent gas channel or the burners, a tunnel beneath eachv side of the bench of Ovens, and a connection between each tunnel and the lower portions of the adjacent regenerators.

7. In a bench of coke oi ens, the combination with a plurality of heating Walls of burners for each heating wall, a spent gas channel for each heating Wall, a pair of regenerators beneath each heating wall, each pair of regenerat-ors having a dimension in the direction of the length of the bench of ovens less than the distance between the center lines of adjacent heating walls, and each pair of regenerators being of vertical dimension suitable to give a desired regenerating capacity, a connection from the upper portion of each regcncrator to the corresponding spent gas channel and to the corresponding burners, means for isolating each of said connections either from the spent gas channel or from the burners, a tunnel beneath each side of the, bench of ovens, and connections between the lower portions of the regenerators and the adjacent tunnels S. The combination with a plurality of coke ovens of heating walls between the carbonizing chambers of said ovens, burners for each heating wall. a. spent gas channel for each heating wall, a pair of regcnerators beneath each heating wall, vertical partitions between the regenerators of adjacent heating walls, said partitions servingalso to support the carbonizing chambers, a connection from the upper portion ot'each regenerator to the corresponding spent gas channel and the corresponding burners, means for isolating each regenerator either from the spent gas channel or from the burners, and air connections for the deliveryof 95 air to the lower portions of the regenerators.

9. The combination with a plurality of coke ovens of heating walls between the carbonizing chambers of the ovens, burners in each heating wall, a spent gas channel for each heating wall, a pair of regene-rators beneath each heating wall, each pair of regenerators having a dimension in the direction of the length of the bench of ovens less than the 7 distance between the center lines of adjacent heating walls, and having a vertical dimension suitable to give a desired regenerator capacity, a connection from the upper portion oi each regeneratDr to the corresponding spent gas channel and the corresponding burners, means for isolating each regenerator either from the spent gas channel or from the burners, vertical partitions between adjacent regenerators and beneath the carbonizing chambers, and air connections for the delivery of air to the lower portions of the regenerators.

10. The combination with a plurality of coke ovens having carbonizing chambers, gheating walls, and burners for the heating walls, of groups of regenenators beneath the opposite ends of the coke ovens, a common connection for the delivery of air to all of the burners of each heating Wall, and connections from one regenerator of each group to each of said common connections.

11. In a bench of coke ovens, the combination with a plurality of heating walls, and burners for each heating Wall, of a common connection for the delivery of air to all of 13 0 the burners of each heating wall, a regenerator under each end of each heating wall, and connections from each of said regenerators to the common connection oi the corresponding heating wall.

12. In abench of coke ovens, the combination with a plurality of heating walls, and burners for each heating wall, of'a spent gas delivery connection beneath each heating wall, a-connnon connection for the delivery of air to all of the burners of each heating wall, a regenerator beneath each end of each Spent gas connection, connections from each regenerator to each of said common connections and to each of said spent gas connections for each heating wall, and dampers for controlling communication between each regeneratorand the corresponding common connection and the corresponding spent gas connection.

13. In a bench of coke ovens, the combination with a plurality of heating walls, and burners for each heating wall, of a common 4 connection for the delivery of air to all of the burners of each heating wall, a-spent gas connection for the delivery of spent gas from each heating wall, a regenerator beneath each end of each heating wall, connections from each regenerator to the aforementioned common air connection and to the aforementioned spent gas connection, and dampers for controlling the comn'iunication of each regenerator with the common air connection and the spent gas connection.

A. In a bench of coke ovens, the combination with a plurality of heating walls, and

burners for each heating wall, of a common connection. for the delivery of air to all of the burners of each heating wall,.a spent gas connection for the delivery of. spent gas from each heating wall, a regenerator for each end of each heating wall, connections from each. regenerator to the aforementioned common air connection and to the aforementioned spent gas connection, and

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means for controlling communication from each regenerator to the common air connec tion and to the spent gas connection.

15. In a beach of coke ovens, the combination with a plurality of heating walls, of a common connection for each heating wall for the delivery of air to all portions thereof, aregenerator under each end of each heating wall, and connections from each of said regenerators to the common connection of the corresponding heating wall.

16. In a bench of coke ovens, the combination with a. plurality of heating walls, of a common connection'for each heating wall for the delivery of air to all portions thereof, a regenerator for each end of each heating wall, nd connections from each of said regenetators to the common connection of thecorresponding heating wall.

17. In a bench of coke ovens, the combination with a plurality of heating walls, of a common connection for each heating wall for the delivery of air to-all portions thereof,

a. pair ofregenerators for each of said common connections, and a connection from each of said regenerators to the corresponding common connection. I

18. In a bench of coke ovens, the c0mbi-- natibn with a plurality of heating walls and burners "for each heating wall, of a common connection for each heating wall for the delivery of air to all of the burners of the same, a pair of regenerators for each common connection, and connections from the FRANCES M. FRos'r, THOMAS A. BA RING, Jr. 

